The present invention relates to a sizing or coating composition that, when applied to paper substrate, creates a substrate having improved waterfastness, surface strength, and surface strength as measured by resistance to abrasion. In addition, the present invention relates to paper substrates containing...http://www.google.com/patents/US8048267?utm_source=gb-gplus-sharePatent US8048267 - Recording sheet with improved image waterfastness, surface strength, and runnability
